coderef

WebGPU subgroupsLimited availability

The subgroups extension for the WebGPU Shading Language (WGSL) enables SIMD parallelism. Using subgroups, threads in a workgroup can efficiently communicate and perform collective operations.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–143Not supported
144+Supportedsince Jan 13, 2026
Current: 155
Edge
12–143Not supported
144+Supportedsince Jan 21, 2026
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
18–143Not supported
144+Supportedsince Jan 13, 2026
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN — see the links below.

Feature detection

JS · check before using
if ("GPUSupportedFeatures" in globalThis && "feature_subgroups" in GPUSupportedFeatures.prototype) {
  // GPUSupportedFeatures.feature_subgroups is available
}

Specification